(:*******************************************************:)
(: Test: K-SeqExprCast-256                               :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:21+01:00                       :)
(: Purpose: '-01' is an invalid lexical representation for xs:gMonth. :)
(:*******************************************************:)
xs:gMonth("-01")